@Matthieu GARCIA Absolutely, I'd be happy to clarify this for you! The

credentialId

parameter you're referring to is essentially a unique identifier for the set of credentials (API key and API secret) that you would normally use on the Vonage dashboard. When you're working with the API, you need to have these credentials pre-registered and associated with a

credentialId

that the API can reference. To associate a phone number with an assistant via the API, you would first need to ensure that your API key and API secret have been registered through the Vonage API platform and that you have received a

credentialId

in response. This

credentialId

is what you would then use in your API request. If you have not yet registered your API key and API secret and obtained a

credentialId

, you will need to do so through the appropriate API endpoint provided by Vonage. Once you have this

credentialId

, you can proceed with your API request to associate the phone number with your assistant. If you already have your

credentialId

, you can proceed with the API request by including it along with the

vonagePhoneNumber

you wish to associate with your assistant. If you need further assistance on how to register your credentials and obtain a

credentialId

, or if you're ready to make the API request and need guidance on the next steps, please let me know!